#include <stdio.h>
int main()
{ 
    int max(float x, float y);
    float a,b;
    int c;
    scanf("%f,%f,",&a,&b);
    c=max(a,b);
    printf("max is %d\n",c);
    return 0;
}
int max(float x, float y)
{
    float z;
    z=x>y?x:y;
    return(z);
}